Using data about risk factorsSpec 4.2.2.6
You need to interpret data about risk factors for specified diseases. The same skills apply as for incidence data.
- Translate information between graphical and numerical forms.
- Extract and interpret information from charts, graphs and tables.
- Use a scatter diagram to identify a correlation between a risk factor and a disease.
- Understand sampling: the sample should be large and representative for the conclusion to be reliable.
Describe what the data show first, then say whether there is a correlation. Then say whether the data prove a cause. A correlation alone does not. You also need a causal mechanism, or evidence that other factors were controlled.